Tri-sphere multi-Mode Mobility Platform built by Square One, specialized in the design and development of innovative automated work cells, robots, and precision positioning devices. This walking unmanned ground robot has ability to move autonomously through difficult terrain for reconnaissance and surveillance missions for military use. http://www.sqr-1.com/multimodemobility.php#close, https://www.youtube.com/watch?v=jFAzZ3LYmnQ

Walking vehicle for one person, It looks like the RHex robot of Boston Dynamics, smaller. http://discovery-prototype.ru/

Little Dog Robot of Boston Dynamics, which belongs to Google. This walking robots really walks on rocks, which is rare. http://www.bostondynamics.com/, http://www.robotshop.com/letsmakerobots/rotary-walker-entry-rescue-robot-challenge

Walking Machine by Meccano. This one is off-road but slow, heavy and rather complex compared with a tracked vehicle. It is only mechanical. Pict J M M, May 2017. https://www.youtube.com/watch?v=bctRkiIfxn4